Apparatus for removing gases and foul air from mines.



J. G. STIRLING.

APPARATUS FOR REMOVING GASES AND FOUL AIR PROM MINES. APPLICATION FILEDAPR. 22, 1909.

932,916. Patented Aug. 31, 1909.

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I xosnrn 0.; srmmne, or ieamnsrown, rnnnsrtvanm- APPARATUS ron-nniuovineeasinfsiinn FoULiaIRrBonMnvEsi To all whom it may concern:

Be it known that I, JosEPH C. ST nnI'Nc, a citizen of the United Statesof America, residing at Bakerstown, in the county of Allegheny and Stateof Pennsylvania, have invented certain new and. useful Improvements inwApparatus for Removing Gases and Foul Air from Mines, of which thefollow ing is a specification, reference being had therein to theaccompanying drawing.

This invention relates to an apparatus for removing gases and foul airfrom mines, and theobject of the invention is to provide an apparatusthat can be easily located in the entry or rooms of a mine forwithdrawing".

gases and foul air therefrom, without interfering wlth theoperation ofcars or workmen within the mlne.

A further objectof this invention is to v provide a simple and durableapparatus that will tend to create a vacuum in a mine and consequentlydraw fresh air into the rooms of a mine through the entry and shaftthereof.

lVith the foregoing and other objects in view, the invention consists ofthe novel construction, combination and arrangement of parts hereinaftermore specifically described.

and illustrated in the accompanying drawings wherein is shown thepreferred embodiment of the invention, but it is to beunderstood thatchanges, variations and moditications can be resorted .to which comewithin the ope of the claims hereunto appended.

In t- 1e drawings, Figure l is a sectional view of the entry of a mineillustrating the arrangement of my apparatus, therein, Fig. 2 isa crosssectional view of the same, Fig. 3 is an enlarged longitudinal sectionalview of a jet forming part of the apparatus, and Fig. 4 is a crosssectional view taken on the line X X of Fig. 3.

Referring to the drawings by reference characters, an apparatus inaccordance with this invention comprises an ejector consisting of ahollow cylindrical body-portion 1 open at each end and having theperiphery at its ends exteriorly threaded as at 2, 3, respectively. Thebody-portion 1 approximately centrally thereof is provided with anangularly disposed nipple et formed with interior threads and whichcommunicate with an L-shaped bore 5 extending transversely andlongitudinally with respect to the bodyportion 1. The bore 5 graduallytapers from the transverse portion to'the end of the low M Specificationof Letters Patent. Patented All Application filed @1122; 1909. sem No.acres?! rear portion of tracted. Mounted upon the threads 2 of the bodyf3 portion 1 is an interiorly threaded coupling T 8 to which is attacheda gas inlet pipe 9 ex:

' gitudinal. portion thereof," the transverse portion beingof greaterdiameter than the longitudinal portion. The longitudinal portion of thebore extends rearwardly to the rear end ofthe body-portion 1. Thelongitudinallyextending portion ofthe bore 5 and a part of thetransversely extending portion is formed in an'internal enlargement 6within.

the body-portion 1 and it is approximately half the length of the bodyportion 1.

Owing to the providing of the body-portion: l with the internalenlargement 6, the opening of the body-portion at the forward end,

is cylindrical and atthe rear end is of-cres cent or inverted U-shape incontour as at 7. Under such conditions, the opening at the thebody-portion is contending in the same direction as thebody vv 5 portionand has its'free end provided with a flared or funnel-shaped mouth 10.Secured to the threads 3 of the body-portion 1 is an elbow 11 forcoupling to the Ody-portion a pipe 12 which depends and is disposed atright angles with respect to the body-portion l. The pipe 12 constitutesa discharge pipe and communicates with an exhaust or outlet pipe 15.Secured to the nipple 4 is a depending pipe 13 which is disposed atright angles with respect. to the body-portion 1 and communicates with acompressed air supply pipe 14: whereby compressed air is supplied to thebore 5. The pipes 14 ex tend along the entry 16 of a mine adjacent tothe sidewalls thereof so as not to interfere with the passage of theworkman or the cars. The pipes 12 and 13 are angle-shaped and extendupwardly at the side walls of the entry and at the top thereof andcommunicate with the body-portion 1, the latter being disposedapproximately centrally of the top of the engine.

The exhaust or outlet pipe 15 hasone end thereof closed while theopposite end extends up the shaft or opening 17 of the mine,

- while the pipe 14 has one end closed and its opposite end connected toan air compressor or pump.

\Vhen compressed air is supplied to the ejector the air discharged bythe bore 5 creates a suction in the eject-or and draws the gas and foulair through the pipe 9, into the body-portion 1, and is dischargedtherefrom into the pipe 12 which opens into the exhaust pipe 15, the gasand foul air being discharged above the shaft or opening 17, one or moreof the ejectors can be located upon the pipes 14 and 15 and furthermorethe ejectors can be located at suitable places throughout the minewherever gases and foul air have a tendency to accumulate.

From theforegoing description taken in connection with the accompanyingdrawings, it is evident that the invention aims to msure perfect safetyto miners by removing t'oul air and gases so as to prevent explo--;i()l1.

Having now described my invention, what I claim as new, is

1. In an apparatus for exhausting foul air from mines, the combinationwith a compressed air supply pipe and an exhaust pipe adapted to extendin the mine, an ejector comprising a hollow body-portion having aninternal enlargement provided with an k shaped bore gradually decreasingin'diameter from its inlet to its outlet end, said internal enlargementcontracting the openin of the lmdy-portion at one end thereof an saidenlargement of a length approximately half the length of saidbody-portion and terminating at one end at the rear end of theluuly-portion, said body-portion further provided with an inlet nippleopening into the enlarged end of said bore, a disclr'rge pipecounnunicatilw wii-lz. "he rear ut of the body-portion, a compressed airfeed pipe communicatin with said nipple and with said supply pipe, and afoul air inlet pipe connecting wit 1 the inlet end of said bodyportionand havin the free end thereof provided with a flare mouth.

2. In an apparatus for exhausting foul air from mines, the combinationwith a compressed air suppl pipe and an exhaust pipe adapted to extentinto the mine, of an ejector comprising a hollow body portion providedwith an internal enlargement formed with a substantially L-shaped boregradually decreasing in diameter toward the discharge end of saidbody-portion and terminating at the discharge end of saidbody-portiomsaid body-portion further provided with an air inlet nipplecommunicating with the enlarged end of said bore, an angle-shapeddischarge pipe communicating with the discharge end of saidbody-portion, an angleshaped coni'pressedair feed pipe communicatingwith said nipple and with said compressed air supply plpe, and a foulair inlet pipe communicating with the inlet end of said body-portion.

In testimony whereof I aflix my signature in the presence of twowitnesses.

JOSEPH o. STIRLING.

\Vitnesses:

A. H. Ransrio, Max H. Snomvrrz.

